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From the thermochemical reactions, C(gra...

From the thermochemical reactions, C(graphite)`+1//2O_(2)rarr CO , Delta H =-110.5`KJ
`CO+1//2O_(2)rarr CO_(2),Delta H=-283.2` KJ the heat of reaction of C(graphite) `+O_(2)rarr CO_(2)` is :

A

`-393.7 kJ`

B

`+393.7 kJ`

C

`-172.7 kJ`

D

`+172.7 kJ`

Text Solution

Verified by Experts

The correct Answer is:
A
`DeltaH=H_(P)-H_(R)`
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